Fedora installs the GNOME Desktop Environment by default.
There is no "default" in the sense that Fedora provides only one out of the box, or even one at all. The main "Desktop Edition" disc uses GNOME, but the project also provides discs for KDE, LXDE, and XFCE, as well as a CLI-only installation.
System Menu
Fedora is a desktop-oriented Linux distribution, and ususally features Red Hat's more experimental software.
BASH (Bourne-again Shell)
Bash shell. Stands for Bourne Again Shell
System->Preferences->Desktop EffectsClick on the button labelled 'Enable Desktop Effects'Log out, then log back in.
it configures 6 diffrent consoles by default for use
Runlevels 0 and 6 should never be set as default.
They are both long obsolete, so there is no difference between them as to whether you should use them or not. The major changes Fedora 16 made as compared to Fedora 15 were: GRUB2 became the default bootloader The HAL daemon was removed, in favor of udisks and udev The kernel version was upgraded to 3.1
RT Linux is a specific distribution of Linux, as is Fedora. You can install RT Linux over Fedora, but RT Linux isn't a program you install in a Fedora installation, but an entirely different installation altogether (and meant for different things; RT Linux is meant for specialty devices where the machine needs to manage devices and calculations in Real-time whereas Fedora is more a desktop/server distribution.)
Fedora is one of the Linux distributions. Its advantages include a fast boot time of less than 20 seconds, it is stable due to the available bug fixes, offers great virtualization experience, enhanced security and has many graphical tools.
Most desktop Linux distributions (Ubuntu, Fedora, PCLinuxOS, OpenSUSE) are equally suitable for laptops.